Issue #3275256 by phenaproxima: Raise the minimum required version of Composer to 2.3.5

composer.json

@@ -14,17 +14,11 @@
     "ext-json": "*",
     "drupal/core": "^9.2",
     "php-tuf/composer-stager": "0.3.0",
-    "composer/composer": "^2"
+    "composer/composer": "^2.2.12 || ^2.3.5"
   },
   "config": {
     "platform": {
       "php": "7.3.0"
     }
-  },
-  "repositories": [
-    {
-      "type": "vcs",
-      "url": "https://github.com/php-tuf/composer-stager"
-    }
-  ]
+  }
 }

drupalci.yml

@@ -43,7 +43,7 @@ build:
           # to work correctly, and disabling it is a known workaround.
           # @see pcre.ini
           - sudo cp modules/contrib/automatic_updates/pcre.ini /usr/local/etc/php/conf.d
-          - composer self-update 2.2.4
+          - composer self-update 2.3.5
         halt-on-fail: true
       # run_tests task is executed several times in order of performance speeds.
       # halt-on-fail can be set on the run_tests tasks in order to fail fast.

package_manager/src/Validator/ComposerExecutableValidator.php

@@ -25,7 +25,7 @@ class ComposerExecutableValidator implements PreOperationStageValidatorInterface
    *
    * @var string
    */
-  public const MINIMUM_COMPOSER_VERSION = '2.2.4';
+  public const MINIMUM_COMPOSER_VERSION = '2.3.5';
 
   /**
    * The Composer runner.